sorry for the confusion
let me explain my purpose, if i put the vision camera on the phantom 2 (that doesn't have a wifi module) inside.
can I just buy the FC200 camera and mount it on the phantom 2 without any additions to the phantom 2 and just connect the re700 to the vision camera and it works?

I don't know why that wouldn't work. After all, the only connection the camera has to the craft is the power cord. All the hardware needed for FPV (wifi module and antennas) are in the camera.

But there is one aspect of this I don't quite get. That is gimbal operation. The gimbal is wired to the craft, not the camera. And yet, to move the gimbal on a stock Vision, one must touch the screen of his monitor to make the gimbal move. How that works I have no idea. Can somebody explain?